Grate for furnaces.



F. FIEBEGEB.

GBATE FOB FURNACES.

(Application med-Dec. 11, 1901.)

Patented Oct. 7, i902.

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UNITED STATES PATENT Ormea,

FRANK FIEBEGER, OF AKRON, OHIO.

GRATE FOR FU RNACES.

SPECIFICATION forming part of Letters Patent No. 710,570, dated October 7, 1902.

Application filed December 11,1901.. Serial No. 85,419.

To @ZZ whom it 'ma/y concern:

Be itknown that I, FRANK FIEBEGER, a citizen of the United States, residing at Akron, in the county of Summit and State of Ohio, have invented a certain new and useful lmprovement in Grates for Furnaces, of which the following is a specification. Y

My invention has relation to improvements in that class of grates for furnaces and like heating instrumentalities of a type known as the rocking-bai"7 grate; and the object of my invention is to produce a new and improved grate of the class named in which the rocking grate-bars shall be arranged in pairs, with gearing connected with the several pairs by which a single pair may be simultaneously rocked without disturbing the adjacent pair, in which the bar-frame may be readily dropped at clinkers or the removal of a worn-out bar and the substitution of a new one, and for this latter purpose to provide a separable cross journal-bearing for the axles of the bars, and as a final purpose to enable the grate-frame to be readily removed and replaced without taking the furnace to pieces.

To the aforesaid objects my invention consists in the peculiar and novel construction, arrangement, and combination of parts hereinafter described and then speciticallypointed out in the claim, reference being had to the accompanying drawings, which form a part of this specification.

In the accompanying drawings, in which similar reference-numerals indicate like partsy in the different figures, Figure 1 is a plan of an ash-pit of a furnace in section on the plane of grate and provided with my improved grate; Fig. 2, a side elevation of the'sa'me looking from the left of Fig. 1, with the ashpit in fore-and-aft vertical section and the grate dropped at the front to permit the-removal of clinkers, or as also illustrating its first position in inserting the grate into the furnace or removing it therefrom; and Fig. 3, the front bar of the grate-frame, illustrating how it is separable to permit the insertion or removal of grate-bars.Y

Referring to the figures, wall, with a door-casing 2.

1 is the ash-pit On the opposite inner faces of the ash-pit, at the back, are

the front to permit the removal ofV Y parts,

(No modem trunnion-supports 3, the one in Fig. 2 being shownin section at the inner face of the ashpit, which consist of brackets that may be attached to orintegral with the ash-pit and have their rear ends curved upward to prevent the trunnion passing over and their front ends similarly curved upward, butin a less degree. On the opposite inner faces of the ash-pit, at the front, are two front arm-supports 4, similarly constructed and having semicircular notches in the top. i

The grate-frame 5 has trunnions 6 at the sides near the back to rest in the supports 3 and at the sides near the front arms 7 to rest in tbe supports 4, the parts being so constructed that the arms 7 will rest in the supports 4 when the trunnions G are at the back of the support-s 3, but will pass over the fronts when those trunnions are drawn to the front of the supports 3.

- The front bar ofthe frame consists of two as shown in Fig. 3, the lower half being red ucedfrom above to form a seat for the upper half, and has at one end a sloping mortise to receive a tenon 8 and at about its center and near the other end mortised to receive tenons 9 10 of the upper half, which latter tenons have holes for locking-pins.

The frame 5 is circular at the back, the circle being completed by a curve 1l.

.The grate-bars are substantially similar in construction, the inner ones 12 being alike, and each embodies a central shaft with integral projecting fingers from each side, the fingers of both bars being in alinement with each other and of such length as to nearly meet. The outer bars 13 are similarly constructed; but the number of fingers is necessarily reduced to adapt them to the smaller spaces in which they rock and alternate with the tingers of the bars 12. The back ends of these bars are fitted to turn in openings in the back of the frame 5, (indicated bydotted lines in Fig. 1,) and their front ends are journaled in the lower half of the frame-front and retained by the upper half. The inner bars 12 extend through the frame-front and are provided with sockets 14 to receive a tool by which they may be rocked. The inner part of the circle of the frame has integral projections to partially ll the spaces not filled by the teeth of IOC the bars l2. On each inner bar l2 and each outer bar 13 are mounted, respectively, small gears or pinions 15 1G, that mesh together, one pair being set farther inward from the front bar of the frame 5 than the other, by which arrangement an inner bar and its adjacent outer bar can be simultaneously rocked in opposite directions Without disturbing the other.

The grate is prepared for use by mounting the bars in their journal-bearings, just described, and inserted in the furnace by raising the back end of the frame until the trunnions 6 will pass over the front ends of the supports 3, then pushing it back until the trunnions rest in these supports, then raising the front ends of the frame until the arms 7 are high enough to pass over the supports 4, and then pushing the frame back until the arms rest in these supports.

The front of the frame and grate is lowered by drawing the frame forward enough t0 permit the arms 7 to pass down in front of the supports et.

Any bar may be removed by releasing the upper half of the front bar.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

The combination with agrate-frame having grate-bars mounted therein and having oppositely-disposed trunnions extending from its sides near its back, and arms extending from its sides near its front, of an inclosing case, as an ash-pit, having elongated supports With upwardlyturned ends for said trunnions to permitof their forWard-and-back- Ward movement therein, and supports to receive and iit said arms and hold them against such movement, substantially as shown and described.

In testimony that I claim the above I hereunto set my hand in the presence of tWo subscribing witnesses.

FRANK FIEBEGER.

In presence of- C. E. HUMPHREY, C. l). HUMPHREY. 

